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Investments and Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2022
Investments, Debt and Equity Securities [Abstract] |
Components of Investments | The components of our investments as of June 30, 2022 are as follows (in thousands):
| As of June 30, 2022
| Fair Value Measurement |  | Balance Sheet Classification
| Fair Value Level |  | Cost Basis |  | Unrealized Gains (Losses) |  | Market Value |  | Cash and Cash Equivalents |  | Short-term Investments and Marketable Securities |  | Long-term Investments
Money market fund | Level 1 |  | $ | 9,438 |  |  | $ | — |  |  | $ | 9,438 |  |  | $ | 9,438 |  |  | $ | — |  |  | $ | — |
U.S. Treasuries | Level 1 |  | 17,985 |  |  | (82) |  |  | 17,903 |  |  | — |  |  | 17,903 |  |  | — |
Commercial paper | Level 2 |  | 23,110 |  |  | — |  |  | 23,110 |  |  | — |  |  | 23,110 |  |  | — |
Corporate bonds | Level 2 |  | 15,397 |  |  | (130) |  |  | 15,267 |  |  | — |  |  | 13,245 |  |  | 2,022 |
Asset-backed securities | Level 2 |  | 5,493 |  |  | (3) |  |  | 5,490 |  |  | — |  |  | 5,490 |  |  | — |
Total investments |  |  | $ | 71,423 |  |  | $ | (215) |  |  | $ | 71,208 |  |  | $ | 9,438 |  |  | $ | 59,748 |  |  | $ | 2,022 |
At December 31, 2021, our investments consisted of the following (in thousands):
| As of December 31, 2021
| Fair Value Measurement |  | Balance Sheet Classification
| Fair Value Level |  | Cost Basis |  | Unrealized Gains (Losses) |  | Market Value |  | Cash and Cash Equivalents |  | Short-term Investments and Marketable Securities |  | Long-term Investments
Money market fund | Level 1 |  | $ | 38,301 |  |  | $ | — |  |  | $ | 38,301 |  |  | $ | 38,301 |  |  | $ | — |  |  | $ | — |
U.S. Treasury bonds | Level 1 |  | 8,171 |  |  | — |  |  | 8,171 |  |  | — |  |  | 8,171 |  |  | — |
Commercial paper | Level 2 |  | 23,312 |  |  | — |  |  | 23,312 |  |  | — |  |  | 23,312 |  |  | — |
Corporate bonds | Level 2 |  | 20,107 |  |  | (14) |  |  | 20,093 |  |  | — |  |  | 8,049 |  |  | 12,044 |
Asset-backed securities | Level 2 |  | 15,655 |  |  | (8) |  |  | 15,647 |  |  | — |  |  | 15,647 |  |  | — |
Total investments |  |  | $ | 105,546 |  |  | $ | (22) |  |  | $ | 105,524 |  |  | $ | 38,301 |  |  | $ | 55,179 |  |  | $ | 12,044 |
Amortized Cost Basis and Fair Value of Debt Securities by Contractual Maturity | The amortized cost basis and fair value of debt securities as of June 30, 2022, by contractual maturity, are as follows (in thousands):
| As of June 30, 2022
| Cost Basis |  | Fair Value
Due in one year or less | $ | 69,398 |  |  | $ | 69,186 |
Due after one year through five years | 2,025 |  |  | 2,022 |
Total investments | $ | 71,423 |  |  | $ | 71,208 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 + Details
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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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